Cuba’s Grid Collapses Again as Island Faces Prolonged Darkness

HAVANA — Cuba’s state-controlled electrical grid suffered a total nationwide collapse on Friday, Sept. 18, 2026, plunging the island’s 11 million people into darkness. Cuba’s Ministry of Energy and Mines confirmed the failure on social media, saying the cause remains under investigation and that authorities have no projected timeline for restoring electricity.

The blackout is the seventh complete grid failure in Cuba this year, following a similar total outage just last month. In Havana and other major cities, traffic lights went dark, municipal water pumps stopped functioning, and critical communication networks began to fail.

The U.S. Embassy in Havana issued an emergency alert on Friday warning of widespread cellphone and internet outages across the country. It advised all U.S. citizens currently in Cuba or planning to travel there to exercise extreme caution and prepare for prolonged disruptions, noting that the country’s electrical grid has become “increasingly unstable” in recent months.

Most of Cuba’s Soviet-era thermoelectric power plants are more than four decades old and operate well past their intended lifespans. The network includes the Antonio Guiteras plant in Matanzas and the Lidio Ramón Pérez plant in Felton, where boiler explosions, turbine failures, and a lack of spare parts frequently force facilities offline.

Fuel shortages have added to those mechanical failures. Cuba relies heavily on subsidized crude oil and refined petroleum imports from Venezuela, but Venezuela’s economic hardships and declining oil production have drastically reduced shipments to the island.

Efforts to offset the deficit with fuel shipments from Russia and Mexico have proven insufficient. The Cuban government has been left without the foreign currency reserves required to purchase fuel at market prices on the global stage, while the country’s electrical infrastructure has remained on the verge of collapse for years because of aging equipment and a lack of routine maintenance.

The Cuban government frequently attributes its energy struggles to the long-standing U.S. trade embargo, which restricts Havana’s ability to acquire financial credit and purchase specialized American-made parts for its industrial sector. Economists and energy analysts, however, point to decades of centralized government mismanagement and a failure to diversify into renewable energy sources as primary drivers of the current crisis.

The escalating frequency of the blackouts has raised concerns over potential social unrest. Prolonged power outages combined with severe shortages of food, medicine, and clean water have previously served as catalysts for public anger.

In July 2021, a series of rolling blackouts helped spark the largest anti-government protests in Cuba since the 1959 revolution, leading to widespread arrests and a heightened security presence across the country. Since then, smaller, localized demonstrations have routinely erupted in provincial towns as residents endure daily scheduled and unscheduled power cuts that often last upwards of 18 hours.